/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- *//* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. *//*
* This file is based on usc_impl.c from ICU 4.2.0.1, slightly adapted
* for use within Mozilla Gecko, separate from a standard ICU build.
*
* The original ICU license of the code follows:
*
* ICU License - ICU 1.8.1 and later
*
* COPYRIGHT AND PERMISSION NOTICE
*
* Copyright (c) 1995-2009 International Business Machines Corporation and
* others
*
* All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, provided that the above copyright notice(s) and this
* permission notice appear in all copies of the Software and that both the
* above copyright notice(s) and this permission notice appear in supporting
* documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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*/#ifndef GFX_SCRIPTITEMIZER_H#define GFX_SCRIPTITEMIZER_H#include <stdint.h>
#include "nsUnicodeScriptCodes.h"
#define PAREN_STACK_DEPTH 32class gfxScriptItemizer
{
public:
gfxScriptItemizer(constchar16_t *src, uint32_t length);
void SetText(constchar16_t *src, uint32_t length);
bool Next(uint32_t& aRunStart, uint32_t& aRunLimit,
int32_t& aRunScript);
protected:
void reset() {
scriptStart = 0;
scriptLimit = 0;
scriptCode = MOZ_SCRIPT_INVALID;
parenSP = -1;
pushCount = 0;
fixupCount = 0;
}
void push(uint32_t endPairChar, int32_t scriptCode);
void pop();
void fixup(int32_t scriptCode);
struct ParenStackEntry {
uint32_t endPairChar;
int32_t scriptCode;
};
constchar16_t *textPtr;
uint32_t textLength;
uint32_t scriptStart;
uint32_t scriptLimit;
int32_t scriptCode;
struct ParenStackEntry parenStack[PAREN_STACK_DEPTH];
uint32_t parenSP;
uint32_t pushCount;
uint32_t fixupCount;
};
#endif /* GFX_SCRIPTITEMIZER_H */